50857717 has 4 divisors (see below), whose sum is σ = 51116076. Its totient is φ = 50599360.

The previous prime is 50857673. The next prime is 50857733. The reversal of 50857717 is 71775805.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71775805 = 5 ⋅14355161.

It can be written as a sum of positive squares in 2 ways, for example, as 49196196 + 1661521 = 7014^2 + 1289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50857717 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50857717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50857747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128884 + ... + 129277.

It is an arithmetic number, because the mean of its divisors is an integer number (12779019).

Almost surely, 2^50857717 is an apocalyptic number.

It is an amenable number.

50857717 is a deficient number, since it is larger than the sum of its proper divisors (258359).

50857717 is a wasteful number, since it uses less digits than its factorization.

50857717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258358.

The product of its (nonzero) digits is 68600, while the sum is 40.

The square root of 50857717 is about 7131.4596682587. The cubic root of 50857717 is about 370.4977887162.

The spelling of 50857717 in words is "fifty million, eight hundred fifty-seven thousand, seven hundred seventeen".